Doorlatch



H. W. RIGHTMYER DOORLATCH- Filed Sept. 20, 1932 Aug. 22, 1933.

Patented Aug. 22, 1933 i 1,923,688

UNITED STATES PATENT OFFICE DOORLATCH Holden W. Rightmyer, Toledo, Ohio, assignor to The American Swiss Company, Toledo, Ohio, a Corporation of Ohio Application September 20, 1932 Serial No. 634,021

6 Claims. (Cl. 292-223) This invention relates to door latches, but more f the inner shoulders 23 is engaged 01' Caught particularly to a combination dove tail and latch by the latching dog 15, the inner shoulder 23 for vehicle body doors, in which cooperating DlOVidDg an additOllal latehng abutment wedge elements are employed constituting the adapted t0 be engaged by the lathng dog. It

dove tail, and latching members are combined Will be understood that the blocks 20 are lsimi- 60 with the wedging elements for retaining the door larly constructed for production purposes. in closed position. Fixed to the arm 16 of the latching dog adja- An object of this invention is to provide a new Cent the head 15 thereof is an extension 24,

and improved device comprising a combination which extends through a vertically elongate dove tail and door latch, which is adapted for Opening 25 in the face plate 11. As shown in 65 practical installation on automobile bodies. Figure l, the extension 24 projects inwardly Another object is to produce a door latch havbeyond the inner side of the face plate 1l, and ing the new and improved features of constructhe underside thereof iS engageable by a flange tion and arrangement hereinafter described. 26 0n a plate 27, which is pivotally mounted on An embodiment of the invention is shown for a pin 28 on the back plate 10. The plate 27 70 purposes of illustration, but not of limitation, on extends upwardly, and is provided with a flange the accompanying drawing, in which: 29 at the upper portion thereof, which is held in Figure l is a side elevation partly in section engagement with a roll back arm 30 by a spiral of a combined dove tail and door latch showing spring 31. The free end of the spring 31 enthe parts in latched position; gages a lug 32 projecting inwardly from the plate 75 Figure 2 is a transverse sectional View on the 27. line 2 2 of Figure l; The roll back arm 30 is provided with a squared Figure 3 is an end view of the face plate with Opening 33 to receive the shank of a door handle some of the parts broken away to show the latchdisposed on the outside of the door. A cover ing elements; and plate 34 ts over the roll back 30, and cooperates 80 Figure 4 is an elevation partly in section of with the back plate 10 providing apivotal mountthe dove tail member attached to the door frame ing therefor. From the above description it is or jamb. apparent that by swinging the roll back to In the illustrated embodiment of the invention, the right of Figure 1, the plate 27 is rocked in 30 the combined dove tail and latching device coma clockwise direction about its pivot 28, thereby prises a back plate 10 having an integral face to raise the latching dog 15 through the extenplate l1 at one end, which extends outwardly at sion 24 and arm 16 to release the wedging elean angle to the back plate. Suitably secured to ment 13 from the wedge blocks. Upon release of the face plate l1 is a plate 12 having an integral the outside door handle the spring 31 returns hollow wedging element 13. An opening 14 is the roll back 30 to normal position, and the formed in the lower wall of the wedging element spring 18 returns the latching dog l5 to latching 13 adjacent the smaller end thereof, and projectposition.

ing through this opening is a latching dog 15, In order to retract the latching dog 15 from which is secured to the outer end of an arm 16 the inside of the door, an arm 35 is pivotally disposed within the hollow wedging element 13. mounted on the pin 28 beneath the plate arm The inner end of the arm 16 is pivoted at 17, 27 and projects slightly beyond the upper edge and a spiral spring 18 likewise disposed within of the back plate 10. Pivoted to the upper end the wedging element engages the arm 16 for of an arm 27 is a link 36, the opposite end of urging the latching dog 15 to latching position. which is connected to a remote control operating 100 When the door is closed the wedging element unit (not shown) of any suitable or desired con- 13 is disposed between metal blocks 19, which are struction well known to those skilled in this slidable in housings 20 carried by a mounting art. The upper portion of the arm 35 engages the plate 2l. In rear of each metal block 19 is a front face of the lug 32 S0 that by imparting a rubber block 22, which are preferably under comclockwise movement to the arm 35 by pulling on 105 0 pression, and urge the blocks 19 toward each the link 36, the latching dog 15 is retracted other. The faces of the blocks 19 are inclined through the arm 27 and parts above described. to correspond to the slope or taper of the oppo- Both the plates 27 and 35 are guided in their site side walls of the wedging element 13. Each swinging movements by a single rivet 37 mountof the metal blocks 19 is provided with a pair ed on the back plate 10 and extending through no of shoulders 23. When the door is closed one curved elongate slots 38 in the arm 35 and 39 in the arm 27. The slot 39 is preferably about one-half the length of the slot 38, since the arm 35 is moved in non-boit retracting direction in order to dog or render inoperative the outside operated roll back 30. For this purpose the plate 35 is provided with a shoulder 40 in the front edge thereof, which is adapted to be moved directly beneath a lug 41. The lug 41 is movable with the roll back arm 30 and disposed at substantially right angles thereto. It is manifest that when the arm 35 is moved to the left of Figure 1 the shoulder 4Q is moved directly beneath the lug 41, thereby blocking clockwise or bolt retracting movement of the roll back 30.

Provision is made for automatically moving the arm 35 out of roll back dogging position when the door is slammed. For this purpose an extension 42 is formed on the lower end portion of the arm 35. and projecting laterally from the extension is a flange 43, which is adapted to be moved into or substantially into contact with the latching extension 24 when the arm is in roll back dogging position. When the door is slammed the latching dog l5 is retracted during its movement over the wedge blocks 19 before snapping into latching position. This retracting movement is imparted to the extension 24 causing the latter to move upwardly and through the ilange 43 rock the arm 35 in a clockwise direction (Figure 1) to move the shoulder 40 away from the lug 41, and in this manner release the outside operated roll back.

From the above description, and taken in connection with the drawing, it will be manifest that a commercially practicable construction is produced which can be made to a large extent from metal stampings, and, owing to its simplicity and compactness or arrangement, the construction can vbe inexpensively and eiciently produced. The parts are so designed that they may be readily and conveniently assembled with a minimum of labor and expense.

It is to be understood that the above is given merely by way of illustration, and not of limitation, and numerous changes in details of construction, arrangement and operation may be effected without departing from the spirit of the invention.

What I claim as new and desire to secure by ,Letters Patent is:

l. A door latch comprising a latching element, a spring-tensioned retracting arm, an insideoperated actuating lever engageable with said arm, said arm and lever being arranged one over the other, a common pivot for said members, means for operating said actuating lever, an eX- tension on said arm, an outside operated roll back engageable with said extension for retracting said latching element, and cooperating abutments on said roll back and arm respectively for blocking movement of said roll back when said arm is rocked in a reverse direction.

2. A door latch comprising a latching element, a spring-tensioned retracting arm. an insideoperated actuating lever engageable with said arm, a common pivot for said arm and lever, means for actuating said lever,` an extension on said arm, an outside operated roll back engageable with said extension for retracting said latching element, cooperating abutments on said roll back and arm respectively for blocking movement of said roll back when said arm is rocked in a reverse direction, and another extension on said lever movable into the path of movement of said latching element whereby said element moves said lever out of roll back blocking position when the door is slammed.

3. A door latch comprising a latching element, a spring-tensioned retracting arm, an inside-operated actuating lever engageable with said arm, said arm and lever being arranged one over the other, a common pivot for said members, means common to said arm and lever for guiding the rocking movements thereof, means for operating said actuating lever, an extension on said arm, an outside operated roll back engageable with said extension for retracting said latching element, and cooperating abutments on said roll back and arm respectively for blocking movement of said roll back when said arm is rocked in a reverse direction.

4. A door latch comprising a latching element, a spring-tensioned retracting arm, an inside-operated actuating .lever engageable with said arm and movableto retract .said latching element, a common pivot for said arm and lever, means for actuating said lever, an extension on said arm, registering slots in said arm and lever, a stationary pin in said slots, the slot in said lever being longer than the slot in said arm to afford reverse movement of said lever, and cooperating abutments on said roll back and lever respectively thereby to block movement of said roll back upon said reverse movement.

5. A door latch comprising a latching element, a spring-tensioned retracting arm, an insideoperated actuating lever engageable with said arm and movable to retract said latching element, a common pivot for said arm and lever, means for actuating said lever, an extension on said arm, registering slots in said arm and lever,

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a stationary pin in said slots, the slot in said lever being longer than the slot in said arm to afford reverse movement of said lever, cooperating abutments on said roll back and lever respectively thereby to block movement of said roll back upon said reverse movement. and an extension on said lever movable into the path or" movement of said latching element thereby to move said lever out of blocking position when the door is slammed.

6. In a device of the class described, the combination of a housing having a wedge-shaped projection, a movable latching member in said housing having a part extensible therethrough, outside operated means for actuating said latching member and including a retracting arm operatively engageable with said member, inside-operated means for actuating said latching member and including an actuating lever operatively engageable with said arm and movable to actuate said member through said arm, a common pivot for said arm and lever, and an abutment on said actuating lever movable into engagement with said outside-operated means for rendering the latter inoperative upon movement of said insideoperated means in non-bolt retracting direction.

HOLDEN W. RIGHTMYER. 

